import axios from 'axios'
import { MessageBox, Message } from 'element-ui'

// create an axios instance
const service = axios.create({
    baseURL: "/api", // url = base url + request url
    timeout: 5000 // request timeout
})

// request interceptor
service.interceptors.request.use(
    config => {
        // do something before request is sent

        /*if (getToken()) {
          config.headers['X-Token'] = getToken()
        }*/
        return config
    },
    error => {
        // do something with request error
        console.log(error) // for debug
        return Promise.reject(error)
    }
)

// response interceptor
service.interceptors.response.use(
    /**
     * If you want to get http information such as headers or status
     * Please return  response => response
     */

    /**
     * Determine the request status by custom code
     * Here is just an example
     * You can also judge the status by HTTP Status Code
     */
    response => {
        const res = response.data
        console.log(res)
        console.log(res.code)
        // if the custom code is not 20000, it is judged as an error.
        if (res.code !== 200) {
            Message({
                message: res.msg || 'Error',
                type: 'error',
                duration: 5 * 1000
            })

            // 50008: Illegal token; 50012: Other clients logged in; 50014: Token expired;
            if (res.code === 50008 || res.code === 50012 || res.code === 50014) {
                // to re-system
                MessageBox.confirm('You have been logged out, you can cancel to stay on this page, or log in again', 'Confirm logout', {
                    confirmButtonText: 'Re-Login',
                    cancelButtonText: 'Cancel',
                    type: 'warning'
                }).then(() => {
                    /*store.dispatch('system/resetToken').then(() => {
                      location.reload()
                    })*/
                })
            }
            return Promise.reject(new Error(res.msg || 'Error'))
        } else {
            return res
        }
    },
    error => {
        console.log('err' + error) // for debug
        let errorMessage = '请求失败';
        if (error.code === 'ECONNABORTED') {
            errorMessage = '请求超时，请检查网络连接';
        } else if (error.message.includes('Network Error')) {
            errorMessage = '无法连接到服务器，请确保后端服务已启动';
        } else {
            errorMessage = error.message || '未知错误';
        }
        Message({
            message: errorMessage,
            type: 'error',
            duration: 5 * 1000
        })
        return Promise.reject(error)
    }
)

export default service